446 lines
14 KiB
C
446 lines
14 KiB
C
/* packet-ipxwan.c
|
|
* Routines for NetWare IPX WAN Protocol
|
|
*
|
|
* Wireshark - Network traffic analyzer
|
|
* By Gerald Combs <gerald@wireshark.org>
|
|
* Copyright 1998 Gerald Combs
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0-or-later
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <epan/packet.h>
|
|
#include <epan/expert.h>
|
|
#include "packet-ipx.h"
|
|
|
|
void proto_register_ipxwan(void);
|
|
void proto_reg_handoff_ipxwan(void);
|
|
|
|
/*
|
|
* See RFC 1362 for version 1 of this protocol; see the NetWare Link
|
|
* Services Protocol Specification, chapter 3, for version 2.
|
|
*/
|
|
static int proto_ipxwan = -1;
|
|
|
|
static int hf_ipxwan_identifier = -1;
|
|
static int hf_ipxwan_packet_type = -1;
|
|
static int hf_ipxwan_node_id = -1;
|
|
static int hf_ipxwan_sequence_number = -1;
|
|
static int hf_ipxwan_num_options = -1;
|
|
static int hf_ipxwan_option_num = -1;
|
|
static int hf_ipxwan_accept_option = -1;
|
|
static int hf_ipxwan_option_data_len = -1;
|
|
static int hf_ipxwan_routing_type = -1;
|
|
static int hf_ipxwan_wan_link_delay = -1;
|
|
static int hf_ipxwan_common_network_number = -1;
|
|
static int hf_ipxwan_router_name = -1;
|
|
static int hf_ipxwan_delay = -1;
|
|
static int hf_ipxwan_throughput = -1;
|
|
static int hf_ipxwan_request_size = -1;
|
|
static int hf_ipxwan_delta_time = -1;
|
|
static int hf_ipxwan_extended_node_id = -1;
|
|
static int hf_ipxwan_node_number = -1;
|
|
static int hf_ipxwan_compression_type = -1;
|
|
static int hf_ipxwan_compression_options = -1;
|
|
static int hf_ipxwan_compression_slots = -1;
|
|
static int hf_ipxwan_compression_parameters = -1;
|
|
static int hf_ipxwan_padding = -1;
|
|
static int hf_ipxwan_option_value = -1;
|
|
|
|
static gint ett_ipxwan = -1;
|
|
static gint ett_ipxwan_option = -1;
|
|
|
|
static expert_field ei_ipxwan_option_data_len = EI_INIT;
|
|
|
|
static const value_string ipxwan_packet_type_vals[] = {
|
|
{ 0, "Timer Request" },
|
|
{ 1, "Timer Response" },
|
|
{ 2, "Information Request" },
|
|
{ 3, "Information Response" },
|
|
{ 4, "Throughput Request" },
|
|
{ 5, "Throughput Response" },
|
|
{ 6, "Delay Request" },
|
|
{ 7, "Delay Response" },
|
|
{ 0xFF, "NAK" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
#define OPT_ROUTING_TYPE 0x00
|
|
#define OPT_RIP_SAP_INFO_EXCHANGE 0x01
|
|
#define OPT_NLSP_INFORMATION 0x02
|
|
#define OPT_NLSP_RAW_THROUGHPUT_DATA 0x03
|
|
#define OPT_EXTENDED_NODE_ID 0x04
|
|
#define OPT_NODE_NUMBER 0x05
|
|
#define OPT_COMPRESSION 0x80
|
|
#define OPT_PAD 0xFF
|
|
|
|
static const value_string ipxwan_option_num_vals[] = {
|
|
{ OPT_ROUTING_TYPE, "Routing Type" },
|
|
{ OPT_RIP_SAP_INFO_EXCHANGE, "RIP/SAP Info Exchange" },
|
|
{ OPT_NLSP_INFORMATION, "NLSP Information" },
|
|
{ OPT_NLSP_RAW_THROUGHPUT_DATA, "NLSP Raw Throughput Data" },
|
|
{ OPT_EXTENDED_NODE_ID, "Extended Node ID" },
|
|
{ OPT_NODE_NUMBER, "Node Number" },
|
|
{ OPT_COMPRESSION, "Compression" },
|
|
{ OPT_PAD, "Pad" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string ipxwan_accept_option_vals[] = {
|
|
{ 0, "No" },
|
|
{ 1, "Yes" },
|
|
{ 3, "Not Applicable" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string ipxwan_routing_type_vals[] = {
|
|
{ 0, "RIP" },
|
|
{ 1, "NLSP" },
|
|
{ 2, "Unnumbered RIP" },
|
|
{ 3, "On-demand, static routing" },
|
|
{ 4, "Client-router connection" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
#define COMP_TYPE_TELEBIT 0
|
|
|
|
static const value_string ipxwan_compression_type_vals[] = {
|
|
{ COMP_TYPE_TELEBIT, "Telebit" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static int
|
|
dissect_ipxwan(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
|
|
{
|
|
proto_item *ti;
|
|
proto_tree *ipxwan_tree = NULL;
|
|
int offset = 0;
|
|
guint8 packet_type;
|
|
guint8 num_options;
|
|
guint8 option_number;
|
|
proto_tree *option_tree;
|
|
guint16 option_data_len;
|
|
guint8 compression_type;
|
|
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "IPX WAN");
|
|
col_clear(pinfo->cinfo, COL_INFO);
|
|
|
|
ti = proto_tree_add_item(tree, proto_ipxwan, tvb, 0, -1,
|
|
ENC_NA);
|
|
ipxwan_tree = proto_item_add_subtree(ti, ett_ipxwan);
|
|
|
|
proto_tree_add_item(ipxwan_tree, hf_ipxwan_identifier, tvb,
|
|
offset, 4, ENC_ASCII|ENC_NA);
|
|
|
|
offset += 4;
|
|
packet_type = tvb_get_guint8(tvb, offset);
|
|
col_add_str(pinfo->cinfo, COL_INFO,
|
|
val_to_str(packet_type, ipxwan_packet_type_vals,
|
|
"Unknown packet type %u"));
|
|
|
|
proto_tree_add_uint(ipxwan_tree, hf_ipxwan_packet_type, tvb,
|
|
offset, 1, packet_type);
|
|
offset += 1;
|
|
proto_tree_add_item(ipxwan_tree, hf_ipxwan_node_id, tvb,
|
|
offset, 4, ENC_BIG_ENDIAN);
|
|
offset += 4;
|
|
proto_tree_add_item(ipxwan_tree, hf_ipxwan_sequence_number, tvb,
|
|
offset, 1, ENC_BIG_ENDIAN);
|
|
offset += 1;
|
|
num_options = tvb_get_guint8(tvb, offset);
|
|
proto_tree_add_uint(ipxwan_tree, hf_ipxwan_num_options, tvb,
|
|
offset, 1, num_options);
|
|
offset += 1;
|
|
|
|
while (num_options != 0) {
|
|
option_number = tvb_get_guint8(tvb, offset);
|
|
option_tree = proto_tree_add_subtree_format(ipxwan_tree, tvb, offset, -1,
|
|
ett_ipxwan_option, &ti, "Option: %s",
|
|
val_to_str(option_number, ipxwan_option_num_vals,
|
|
"Unknown (%u)"));
|
|
|
|
proto_tree_add_uint(option_tree, hf_ipxwan_option_num,
|
|
tvb, offset, 1, option_number);
|
|
offset += 1;
|
|
proto_tree_add_item(option_tree, hf_ipxwan_accept_option,
|
|
tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
offset += 1;
|
|
option_data_len = tvb_get_ntohs(tvb, offset);
|
|
proto_tree_add_uint(option_tree, hf_ipxwan_option_data_len,
|
|
tvb, offset, 2, option_data_len);
|
|
offset += 2;
|
|
proto_item_set_len(ti, option_data_len+4);
|
|
switch (option_number) {
|
|
|
|
case OPT_ROUTING_TYPE:
|
|
if (option_data_len != 1) {
|
|
expert_add_info_format(pinfo, ti, &ei_ipxwan_option_data_len,
|
|
"Bogus length: %u, should be 1", option_data_len);
|
|
} else {
|
|
proto_tree_add_item(option_tree,
|
|
hf_ipxwan_routing_type, tvb,
|
|
offset, 1, ENC_BIG_ENDIAN);
|
|
}
|
|
break;
|
|
|
|
case OPT_RIP_SAP_INFO_EXCHANGE:
|
|
if (option_data_len != 54) {
|
|
expert_add_info_format(pinfo, ti, &ei_ipxwan_option_data_len,
|
|
"Bogus length: %u, should be 54", option_data_len);
|
|
} else {
|
|
proto_tree_add_item(option_tree,
|
|
hf_ipxwan_wan_link_delay, tvb,
|
|
offset, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(option_tree,
|
|
hf_ipxwan_common_network_number,
|
|
tvb, offset+2, 4, ENC_NA);
|
|
proto_tree_add_item(option_tree,
|
|
hf_ipxwan_router_name, tvb,
|
|
offset+6, 48, ENC_ASCII|ENC_NA);
|
|
}
|
|
break;
|
|
|
|
case OPT_NLSP_INFORMATION:
|
|
if (option_data_len != 8) {
|
|
expert_add_info_format(pinfo, ti, &ei_ipxwan_option_data_len,
|
|
"Bogus length: %u, should be 8", option_data_len);
|
|
} else {
|
|
proto_tree_add_item(option_tree,
|
|
hf_ipxwan_delay, tvb,
|
|
offset, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(option_tree,
|
|
hf_ipxwan_throughput, tvb,
|
|
offset, 4, ENC_BIG_ENDIAN);
|
|
}
|
|
break;
|
|
|
|
case OPT_NLSP_RAW_THROUGHPUT_DATA:
|
|
if (option_data_len != 8) {
|
|
expert_add_info_format(pinfo, ti, &ei_ipxwan_option_data_len,
|
|
"Bogus length: %u, should be 8", option_data_len);
|
|
} else {
|
|
proto_tree_add_item(option_tree,
|
|
hf_ipxwan_request_size, tvb,
|
|
offset, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(option_tree,
|
|
hf_ipxwan_delta_time, tvb,
|
|
offset, 4, ENC_BIG_ENDIAN);
|
|
}
|
|
break;
|
|
|
|
case OPT_EXTENDED_NODE_ID:
|
|
if (option_data_len != 4) {
|
|
expert_add_info_format(pinfo, ti, &ei_ipxwan_option_data_len,
|
|
"Bogus length: %u, should be 4", option_data_len);
|
|
} else {
|
|
proto_tree_add_item(option_tree,
|
|
hf_ipxwan_extended_node_id, tvb,
|
|
offset, 4, ENC_NA);
|
|
}
|
|
break;
|
|
|
|
case OPT_NODE_NUMBER:
|
|
if (option_data_len != 6) {
|
|
expert_add_info_format(pinfo, ti, &ei_ipxwan_option_data_len,
|
|
"Bogus length: %u, should be 6", option_data_len);
|
|
} else {
|
|
proto_tree_add_item(option_tree,
|
|
hf_ipxwan_node_number, tvb,
|
|
offset, 6, ENC_NA);
|
|
}
|
|
break;
|
|
|
|
case OPT_COMPRESSION:
|
|
if (option_data_len < 1) {
|
|
expert_add_info_format(pinfo, ti, &ei_ipxwan_option_data_len,
|
|
"Bogus length: %u, should be >= 1", option_data_len);
|
|
} else {
|
|
compression_type = tvb_get_guint8(tvb,
|
|
offset);
|
|
ti = proto_tree_add_uint(option_tree,
|
|
hf_ipxwan_compression_type, tvb,
|
|
offset, 1, compression_type);
|
|
switch (compression_type) {
|
|
|
|
case COMP_TYPE_TELEBIT:
|
|
if (option_data_len < 3) {
|
|
expert_add_info_format(pinfo, ti, &ei_ipxwan_option_data_len,
|
|
"Bogus length: %u, should be >= 3", option_data_len);
|
|
} else {
|
|
proto_tree_add_item(option_tree, hf_ipxwan_compression_options,
|
|
tvb, offset+1, 1, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(option_tree, hf_ipxwan_compression_slots,
|
|
tvb, offset+2, 1, ENC_BIG_ENDIAN);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
proto_tree_add_item(option_tree, hf_ipxwan_compression_parameters,
|
|
tvb, offset+1, option_data_len-1, ENC_NA);
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case OPT_PAD:
|
|
proto_tree_add_item(option_tree, hf_ipxwan_padding,
|
|
tvb, offset, option_data_len, ENC_NA);
|
|
break;
|
|
|
|
default:
|
|
proto_tree_add_item(option_tree, hf_ipxwan_option_value,
|
|
tvb, offset, option_data_len, ENC_NA);
|
|
break;
|
|
}
|
|
|
|
offset += option_data_len;
|
|
num_options--;
|
|
}
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
|
|
void
|
|
proto_register_ipxwan(void)
|
|
{
|
|
static hf_register_info hf[] = {
|
|
{ &hf_ipxwan_identifier,
|
|
{ "Identifier", "ipxwan.identifier",
|
|
FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_ipxwan_packet_type,
|
|
{ "Packet Type", "ipxwan.packet_type",
|
|
FT_UINT8, BASE_DEC, VALS(ipxwan_packet_type_vals), 0x0, NULL,
|
|
HFILL }},
|
|
|
|
{ &hf_ipxwan_node_id,
|
|
{ "Node ID", "ipxwan.node_id", FT_UINT32,
|
|
BASE_HEX, NULL, 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_ipxwan_sequence_number,
|
|
{ "Sequence Number", "ipxwan.sequence_number", FT_UINT8,
|
|
BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_ipxwan_num_options,
|
|
{ "Number of Options", "ipxwan.num_options", FT_UINT8,
|
|
BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_ipxwan_option_num,
|
|
{ "Option Number", "ipxwan.option_num", FT_UINT8,
|
|
BASE_HEX, VALS(ipxwan_option_num_vals), 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_ipxwan_accept_option,
|
|
{ "Accept Option", "ipxwan.accept_option", FT_UINT8,
|
|
BASE_DEC, VALS(ipxwan_accept_option_vals), 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_ipxwan_option_data_len,
|
|
{ "Option Data Length", "ipxwan.option_data_len", FT_UINT16,
|
|
BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_ipxwan_routing_type,
|
|
{ "Routing Type", "ipxwan.routing_type", FT_UINT8,
|
|
BASE_DEC, VALS(ipxwan_routing_type_vals), 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_ipxwan_wan_link_delay,
|
|
{ "WAN Link Delay", "ipxwan.rip_sap_info_exchange.wan_link_delay",
|
|
FT_UINT16, BASE_DEC|BASE_UNIT_STRING, &units_milliseconds, 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_ipxwan_common_network_number,
|
|
{ "Common Network Number", "ipxwan.rip_sap_info_exchange.common_network_number",
|
|
FT_IPXNET, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_ipxwan_router_name,
|
|
{ "Router Name", "ipxwan.rip_sap_info_exchange.router_name",
|
|
FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_ipxwan_delay,
|
|
{ "Delay", "ipxwan.nlsp_information.delay",
|
|
FT_UINT32, BASE_DEC|BASE_UNIT_STRING, &units_microseconds, 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_ipxwan_throughput,
|
|
{ "Throughput", "ipxwan.nlsp_information.throughput",
|
|
FT_UINT32, BASE_DEC|BASE_UNIT_STRING, &units_microseconds, 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_ipxwan_request_size,
|
|
{ "Request Size", "ipxwan.nlsp_raw_throughput_data.request_size",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_ipxwan_delta_time,
|
|
{ "Delta Time", "ipxwan.nlsp_raw_throughput_data.delta_time",
|
|
FT_UINT32, BASE_DEC|BASE_UNIT_STRING, &units_microseconds, 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_ipxwan_extended_node_id,
|
|
{ "Extended Node ID", "ipxwan.extended_node_id",
|
|
FT_IPXNET, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_ipxwan_node_number,
|
|
{ "Node Number", "ipxwan.node_number",
|
|
FT_ETHER, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_ipxwan_compression_type,
|
|
{ "Compression Type", "ipxwan.compression.type",
|
|
FT_UINT8, BASE_DEC, VALS(ipxwan_compression_type_vals), 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_ipxwan_compression_options,
|
|
{ "Compression options", "ipxwan.compression.options",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_ipxwan_compression_slots,
|
|
{ "Number of compression slots", "ipxwan.compression.slots",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_ipxwan_compression_parameters,
|
|
{ "Option parameters", "ipxwan.compression.parameters",
|
|
FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_ipxwan_padding,
|
|
{ "Padding", "ipxwan.padding",
|
|
FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_ipxwan_option_value,
|
|
{ "Option value", "ipxwan.option_value",
|
|
FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
};
|
|
static gint *ett[] = {
|
|
&ett_ipxwan,
|
|
&ett_ipxwan_option,
|
|
};
|
|
static ei_register_info ei[] = {
|
|
{ &ei_ipxwan_option_data_len, { "ipxwan.option_data_len.invalid", PI_MALFORMED, PI_ERROR, "Wrong length", EXPFILL }},
|
|
};
|
|
|
|
expert_module_t* expert_ipxwan;
|
|
|
|
proto_ipxwan = proto_register_protocol("IPX WAN", "IPX WAN", "ipxwan");
|
|
proto_register_field_array(proto_ipxwan, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
expert_ipxwan = expert_register_protocol(proto_ipxwan);
|
|
expert_register_field_array(expert_ipxwan, ei, array_length(ei));
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_ipxwan(void)
|
|
{
|
|
dissector_handle_t ipxwan_handle;
|
|
|
|
ipxwan_handle = create_dissector_handle(dissect_ipxwan,
|
|
proto_ipxwan);
|
|
dissector_add_uint("ipx.socket", IPX_SOCKET_IPXWAN, ipxwan_handle);
|
|
}
|
|
|
|
/*
|
|
* Editor modelines - https://www.wireshark.org/tools/modelines.html
|
|
*
|
|
* Local variables:
|
|
* c-basic-offset: 8
|
|
* tab-width: 8
|
|
* indent-tabs-mode: t
|
|
* End:
|
|
*
|
|
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
|
|
* :indentSize=8:tabSize=8:noTabs=false:
|
|
*/
|